Valve.



Patented Mar. 13, I900.

F. F. FIELD V A L V E.

(Application filed Apr. 12, 1899.)

(No Model.)

Eric,

VALVE.

SPECIFICATION forming part of Letters Patent N o. 64 5,078, dated March 13, 1900.

Application filed April 12, 1899.

To ctZZ whm'n, (It may concern.-

Be it known that I, FREDERICK F. FIELD, of Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Valves; and I hereby declare that the following is a full,

clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in self-closing valves-that is to say, valves held to their seats by the pressure of the water; and it consists in the peculiar and novel construction of the valve-case whereby the direction of the flow of the water is changed and the action of the waterhammer minimized, as will be more fully described hereinafter.

Valves used in the system of distributingpipes of a high-pressure water system are subjected to the blows and impact of the water on the back of the valve, and such valves or their seats are soon injured and are liable to leak.

The object of this invention is to protect the valve against the direct impact or blow of the water-hammer, and to this end I provide the valve-chamber with a hood or casing provided with an opening or openings forming the channels through which the fluid passes to the valve and provide the valve with a cylindrical extension controlling the flow of water or other liquid through the opening or openings as the valve is raised or lowered, by which the valve is protected against the impact or blow of the water-hammer.

I have shown in the drawings the improve ment as applied to the valve of a faucet to illustrate my invention.

Figure 1 is a side view of the faucet. Fig. 2 is a front view of the same, showing the operative handle in section. Fig. 3 is a side view of the member, forming a valve-chamber provided with lateral inlets, such as I have used to protect the valve in this kind of faucets against the blows of the water-hammer. Fig. 4 is a vertical sectional view of the faucet, showing the valve in the closed position. Fig. 5 is a vertical sectional view showserial No. 712,704. (No model.)

ing the valve in the raised position. Fig. 6 isa side view of the valve and the valve-sleeve.

In the drawings, a indicates the casing of the faucet; b, the valve-seat; c, the valve; 0, the tubular sleeve connected with the valve; 0 the handle secured to the sleeve, by which the valve is raised; 02, a chamber having the closed end 61, the open end 01 and. the openings (i The chamber cl is shown provided at its open end with an annular flange. In the preferred form this flange fits the bore in the casing with a close fit, so that it is firmly held in place. With the pressure of the water on the closed endof the cap (1 and on the annular flange the cap 61 is firmly held in place, even if loosely fitted. The valve 0 fits the interior of the chamber dwith a sliding fit, so that the valve may be raised and pass into the chamber 62, as is shown in Fig. 5. V The closed end d of the chamber 01 diverts the direction of the How of the water and compels it to flow through the annular space between the outer surface of the chamber (1 and the inner surface of the casing a, from which the water Hows through the openings (1 of the chamber d. The openings d have an aggregate area sufficient to permit a free flow of the maximum quantity of water required.

In the practical use of my improved valve under exceptionally-high pressure I find that the chamber d may be loose in the casing and that when loose the pressure of the water will hold the chamber in the positions shown in Figs. 4 and 5. The movement of the valve is limited by the movement of the handle 0 in the slot, so that when the valve is in its highest position, as is shown in Fig. 5, a considerable space is left between the upper surface of the valve and the closed upper end of the chamber d. I find that when the chamber d is secured in the casing a the valve can be readily raised into the position shown in Fig. 5 and the water supplied through the lateral openings d WVhether the chamber is secured or loose in the casing I find that on closing the valve the lateral openings 61 are first gradually closed, and as the valve .is seated gradually opened, so that the pressure of the water on the valve, while firmly holding the valve to the seat, does not force the I00 valve against the seat with a blow, and does. not, therefore, injure the seat or the valve. I also find that such a valve used for a considerable time under abnormally-high pressure is not affected in juriously by the waterhammer.

While I have no means of ascertaining whether under the usual conditions some air is retained in the chamber d, and thus forms an air-cushion, practical experience has demonstrated that valves provided with the chamber dhave resisted abnormally-high pressures in water-distributing systems for a longtime when valves not provided with the chamber 61 are worn out and leak in a short time of use in the same systems.

I am aware that an inverted cup or chamber has been used in connection with a valve, by which the cup or chamber was raised oit its seat to discharge the liquid, and I do not claim such construction.

I do not wish to confine myself to the exact construction of the valve, the method of operating the valve or the valve-chamber, as other forms of construction may be substituted therefor.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a valve, the combination with the valve-casing, a valve-seat in the valve-casing, a cylindrical valve, and means for moving the valve through a limited distance, of a chamber extending from the valve-seat to a point beyond the traverse of the valve, the end of the chamber opposite the valveseat being closed'to form an air-chamber, and openings in the sides of the chamber, controlled by the cylindrical portion of the valve, whereby the flow of liquid is cut oft during the opening and closing of the valve.

2. In a self-closing valve, the combinationof the following instrumentalities: a valvecasing, a valve-seat in the casing, an inverted cup or chamber extending from the valveseat to a point beyond the movement of the valve, openings in the sides of the chamber, a cylindrical valve closely fitting the interior of the chamber and mechanism for raising the valve off its scat; whereby the valve is protected against the impact of the waterhammer, as described.

3. In a valve, an inverted cup or chamber extending from the valve-seat beyond the traverse of the valve, openings extending laterall y through the walls of the chamber forming the sole discharge-openings, and a cylindrical valve controlling the discharge of the liquid through the lateral openings, as described.

4. The combination in a self-closing valve of an inverted cup or chamber closed at one end, lateral openings in the peripheral wall of the chamber forming the sole outlet for the liquid and a cylindrical valve fitting the interior of the chamber; whereby the discharge of the liquid is controlled by the valve and the impact of the Water-hammer on the valve prevented, as described.

In witness whereof I have hereunto set my hand.

FREDERICK F. FIELD.

WVitnesses:

J. A. MILLER, J r., B. M. SIMMs. 

